To the Editor.—In the June 1977 Archives (113:806-812), Grogan et al said that, in the one case of lichen-planus-like eruption (LPLE) after bone marrow transplantation that we have described,1 there was no mention of satellite cell necrosis (SCN). They have quoted our first report of one case, but not a subsequent one of four cases of LPLE,2 in which SCN is illustrated in figure 3 of the report. We did not emphasize the picture of SCN because, according to Lerner et al,3 we have found, in 17 cases of graft-vs-host reaction (GVHR) after bone marrow transplantation in adults, that epidermal cell necrolysis (ECN) without a satellite mononuclear cell was much more frequent. After reading the report by Grogan et al, we reviewed the slides of our LPLE and found that SCN was actually seen in every case; however, ECN was more frequent. The presence of SCN